from The Century Dictionary and Cyclopedia
- n. A horticultural name for Epiphyllum, a small genus of the family Cactaceæ found from Mexico to South America and cultivated in numerous horticultural forms, some of which are hybrids with other genera. They have flat, two-edged crenate branches, no spines but bristles, and showy flowers borne in the crenatures of the branches. See Epiphyllum.
Sorry, no etymologies found.
Some of the most common species in cultivation are the phyllocactus species, often called the night-blooming cereus.